JPH0523099B2 - - Google Patents

Info

Publication number
JPH0523099B2
JPH0523099B2 JP58023472A JP2347283A JPH0523099B2 JP H0523099 B2 JPH0523099 B2 JP H0523099B2 JP 58023472 A JP58023472 A JP 58023472A JP 2347283 A JP2347283 A JP 2347283A JP H0523099 B2 JPH0523099 B2 JP H0523099B2
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP58023472A
Other versions
JPS59148467A (en
Inventor
Koji Takane
Original Assignee
Canon Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Kk filed Critical Canon Kk
Priority to JP58023472A priority Critical patent/JPH0523099B2/ja
Publication of JPS59148467A publication Critical patent/JPS59148467A/en
Publication of JPH0523099B2 publication Critical patent/JPH0523099B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00Image coding
    • G06T9/005Statistical coding, e.g. Huffman, run length coding
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41Bandwidth or redundancy reduction
    • H04N1/411Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/419Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step
JP58023472A 1983-02-14 1983-02-14 Expired - Lifetime JPH0523099B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58023472A JPH0523099B2 (en) 1983-02-14 1983-02-14

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP58023472A JPH0523099B2 (en) 1983-02-14 1983-02-14
US06/577,992 US4819079A (en) 1983-02-14 1984-02-08 Data processing apparatus
DE19843404436 DE3404436C2 (en) 1983-02-14 1984-02-08
FR8402143A FR2541013B1 (en) 1983-02-14 1984-02-13 Data processing apparatus and image data archiving apparatus
GB08403835A GB2138184B (en) 1983-02-14 1984-02-14 Data compression

Publications (2)

Publication Number Publication Date
JPS59148467A JPS59148467A (en) 1984-08-25
JPH0523099B2 true JPH0523099B2 (en) 1993-03-31

Family

ID=12111469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58023472A Expired - Lifetime JPH0523099B2 (en) 1983-02-14 1983-02-14

Country Status (5)

Country Link
US (1) US4819079A (en)
JP (1) JPH0523099B2 (en)
DE (1) DE3404436C2 (en)
FR (1) FR2541013B1 (en)
GB (1) GB2138184B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503988B2 (en) * 1986-08-22 1996-06-05 富士ゼロックス株式会社 Image coding device
US4992954A (en) * 1987-08-05 1991-02-12 Hitachi, Ltd. Method of storing character patterns and character pattern utilization system
GB2221126A (en) * 1988-07-15 1990-01-24 Tai Her Yang The automatic prestore double speed modulation, transmission demodulation and recording remote control transfer system of FAX and telegraph
KR930006750B1 (en) * 1989-06-29 1993-07-23 정용문 Coding appalatus of video data
EP0412809B1 (en) * 1989-08-09 1995-12-13 Fujitsu Limited Data compression system
JP2877375B2 (en) * 1989-09-14 1999-03-31 株式会社東芝 Cell transfer method using variable rate codec
US5291303A (en) * 1990-01-16 1994-03-01 Canon Kabushiki Kaisha Facsimile apparatus
JP3013381B2 (en) * 1990-03-28 2000-02-28 ソニー株式会社 Variable length data decoding device
JP2922571B2 (en) * 1990-04-05 1999-07-26 キヤノン株式会社 Data conversion circuit
EP0474444B1 (en) * 1990-09-04 1999-12-01 Canon Kabushiki Kaisha Image processing method and apparatus
GB2260428B (en) * 1991-10-11 1995-03-08 Sony Broadcast & Communication Data Formatter
KR0162197B1 (en) * 1992-05-30 1998-12-15 강진구 Image data variable length coding and decoding method and device
GB2270603B (en) * 1992-09-09 1996-07-24 Sony Broadcast & Communication Data formatting
JPH07107303A (en) * 1993-09-30 1995-04-21 Nec Corp Decoding method for huffman code
GB2294173B (en) * 1994-10-11 1998-12-09 Mitsubishi Electric Corp Disk media, and method of and device for recording and playing back information on or from a disk media
WO1996019809A2 (en) * 1994-12-20 1996-06-27 Philips Electronics N.V. Method of and device for writing and reading data items in a memory system
JP3310525B2 (en) * 1995-06-01 2002-08-05 ビー・イー・テクノロジー株式会社 Digital data processing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723363A (en) * 1980-05-13 1982-02-06 Eiemu Intern Inc Method and device for compressing expanding facsimile transmission system data

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701111A (en) * 1971-02-08 1972-10-24 Ibm Method of and apparatus for decoding variable-length codes having length-indicating prefixes
US3717851A (en) * 1971-03-03 1973-02-20 Ibm Processing of compacted data
US3883847A (en) * 1974-03-28 1975-05-13 Bell Telephone Labor Inc Uniform decoding of minimum-redundancy codes
US4099257A (en) * 1976-09-02 1978-07-04 International Business Machines Corporation Markov processor for context encoding from given characters and for character decoding from given contexts
FR2396479B1 (en) * 1977-06-30 1982-10-29 Cit Alcatel
GB2035747B (en) * 1978-10-05 1983-03-23 Nippon Electric Co Bandwidth compression of a continuous tone facsimile signal
US4376933A (en) * 1979-02-22 1983-03-15 Xerox Corporation Circuit for compacting data
CA1211219A (en) * 1982-06-30 1986-09-09 Hideo Kuroda Digital data code conversion circuit for variable- word-length data code
US4533956A (en) * 1982-09-17 1985-08-06 Minnesota Mining And Manufacturing Co. Apparatus for converting facsimile coded data to video data

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5723363A (en) * 1980-05-13 1982-02-06 Eiemu Intern Inc Method and device for compressing expanding facsimile transmission system data

Also Published As

Publication number Publication date
DE3404436C2 (en) 1991-12-05
FR2541013A1 (en) 1984-08-17
FR2541013B1 (en) 1990-03-30
GB8403835D0 (en) 1984-03-21
GB2138184B (en) 1987-06-24
US4819079A (en) 1989-04-04
JPS59148467A (en) 1984-08-25
GB2138184A (en) 1984-10-17
DE3404436A1 (en) 1984-08-16

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